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Finding the Fourth Proportional to 626,269.80, 864,255.78 and 339,790.44

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Solution

The fourth proportional to 626,269.80, 864,255.78 and 339,790.44 is: 468,912.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,269.80 : 864,255.78 = 339,790.44 : x
  2. Step 2: Convert to fraction form
    626,269.80/864,255.78 = 339,790.44/x
  3. Step 3: Cross multiply
    626,269.80x = 864,255.78 × 339,790.44
  4. Step 4: Simplify right side
    626,269.80x = 293,665,851,758.74
  5. Step 5: Solve for x
    x = 293,665,851,758.74/626,269.80
  6. Step 6: Final answer
    x = 468,912.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.